[RTEMS Project] #4247: Change motorola_powerpc bsp to support irq-generic (cloned)

[RTEMS trac]

#4247: Change motorola_powerpc bsp to support irq-generic (cloned)
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  Reporter:  Chris Johns  |      Owner:  Chris Johns
      Type:  enhancement  |     Status:  assigned
  Priority:  normal       |  Milestone:  5.2
 Component:  bsps         |    Version:  5
  Severity:  normal       |   Keywords:
Blocked By:               |   Blocking:
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 Cloned from #4238:
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 Update the `motorola_powerpc` to support `irq-generic` moving the IRQ
 management to the IRQ server. This enables libbsd support for interrupts.

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Ticket URL: <http://devel.rtems.org/ticket/4247>
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